Veteran became the undisputed middleweight champion by holding the WBO, WBC, WBA and the Ring championship belts.
He won an Olympic bronze medal in 2000 before turning professional in the same year.
He went undefeated during his first 28 fights before losing to Kelly Pavlik in 2007.
He has three daughters with wife Erica Taylor.
He had consecutive wins over Bernard Hopkins by decision in 2005.